Fig. 2.
Volume of the right posterior hippocampus and the right caudate nucleus predicts the world ranking (left). Both the volume of the right posterior hippocampus (r(20) = 0.547, p = 0.008) and the right caudate nucleus (r (20) = 0.5, p = 0.018) significantly predict the world ranking position of the memory athletes (right). Furthermore, we found a strong correlation between the volume of the right posterior hippocampus and the right caudate nucleus within the athletes (r (20) = 0.633, p = 0.008). This correlation is significantly stronger compared to the control group (z = 2.2, p = 0.028). In which, the correlation seemed absent (r(20) = 0.05, p = 0.824). All correlations are corrected for intracranial volume